Multi-Stroke Cylinder Operation in an Internal Combustion Engine
First Claim
1. A method for starting an internal combustion engine of a hybrid-electric vehicle having a controller, the engine having a plurality of cylinders, each with at least an intake and exhaust valve, each of which may be held in a position for a cycle of a cylinder, the method comprising:
- deactivating a plurality of cylinders in said engine in response to a signal from the controller of the hybrid-electric vehicle by mechanically deactivating valves in each cylinder of the engine, the deactivation in response to a request from the controller of the hybrid-electric vehicle and to reduce a number of operating valves in each cylinder of the engine.
2 Assignments
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Accused Products
Abstract
A method for starting an internal combustion engine of a hybrid-electric vehicle having a controller, the engine having a plurality of cylinders, each with at least an intake and exhaust valve, each of which may be held in a position for a cycle of a cylinder, the method comprising of deactivating a plurality of cylinders in said engine in response to a signal from the controller of the hybrid-electric vehicle by mechanically deactivating valves in each cylinder of the engine, the deactivation in response to a request from the controller of the hybrid-electric vehicle and to reduce a number of operating valves in each cylinder of the engine.
132 Citations
7 Claims
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1. A method for starting an internal combustion engine of a hybrid-electric vehicle having a controller, the engine having a plurality of cylinders, each with at least an intake and exhaust valve, each of which may be held in a position for a cycle of a cylinder, the method comprising:
deactivating a plurality of cylinders in said engine in response to a signal from the controller of the hybrid-electric vehicle by mechanically deactivating valves in each cylinder of the engine, the deactivation in response to a request from the controller of the hybrid-electric vehicle and to reduce a number of operating valves in each cylinder of the engine. - View Dependent Claims (2, 3)
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4. A method for starting an internal combustion engine of a hybrid-electric vehicle having a controller, the engine having a plurality of cylinders, each with at least an intake and exhaust valve, each of which may be held in a position for a cycle of a cylinder, the method comprising:
deactivating a plurality of cylinders in said engine in response to a signal from the controller of the hybrid-electric vehicle by mechanically deactivating valves in each cylinder of the engine, the deactivation in response to a request from the controller of the hybrid-electric vehicle and to reduce a number of operating valves in each cylinder of the engine, where the valves held closed include intake valves, adjusting a transmission coupling element coupled to a transmission based on the valve deactivation. - View Dependent Claims (5)
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6. A method for starting an internal combustion engine of a hybrid-electric vehicle having a controller, the engine having a plurality of cylinders, each with at least an intake and exhaust valve, each of which may be held in a position for a cycle of a cylinder, the method comprising:
deactivating a plurality of cylinders in said engine in response to a signal from the controller of the hybrid-electric vehicle by mechanically deactivating valves in each cylinder of the engine, the deactivation in response to a request from the controller of the hybrid-electric vehicle and to reduce a number of operating valves in each cylinder of the engine, where the valves held closed include exhaust valves, adjusting a transmission coupling element coupled to a transmission based on the valve deactivation. - View Dependent Claims (7)
Specification